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Net Income Per Share
 9 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Net Income Per Share
Note 14. Net Income per Share

The Company computed basic and diluted net income per share as follows (in millions, except per share amounts):
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2019
 
2018
 
2019
 
2018
Numerator:
 
 
 
 
 
 
 
Net income
$
99.3

 
$
223.8

 
$
176.6

 
$
374.7

Denominator:
 
 
 
 
 
 
 
Weighted-average shares used to compute basic net income per share
342.2

 
346.2

 
345.5

 
350.1

Dilutive effect of employee stock awards
3.3

 
4.3

 
4.6

 
5.1

Weighted-average shares used to compute diluted net income per share
345.5

 
350.5

 
350.1

 
355.2

Net income per share
 
 
 
 
 
 
 
Basic
$
0.29

 
$
0.65

 
$
0.51

 
$
1.07

Diluted
$
0.29

 
$
0.64

 
$
0.50

 
$
1.05

 
 
 
 
 
 
 
 
Anti-dilutive shares
2.8

 
4.2

 
2.7

 
5.0